Due to the fucked up trademark law in the US, many stitch'n bitches were threatened by the “sew fast/sew easy company” that managed to register the term as a trademark in 2005.

The trademark should have been refused in the first place, since “the proposed mark consists of or comprises immoral, deceptive, or scandalous matter” (US Trademark FAQ).
On these grounds the company fucking machines has been denied a trademark, and so should Stitch 'n Bitch, because those bitches are knitting for fun rather than fucking for money - rendering the term bitches not only immoral and scandalous, but also highly deceptive.